This kind of machine five years ago and it is still in good condition. A. began
来源:网络
时间:
推荐文章

This kindof machine ________________ five years ago and it is still in good condition.
A. beganto use
B. put to use
C. was using
D. came into use
试题答案
答案:D
提示:固定短语,“开始投入使用”。
|